FeaturesFor connecting grounding conductor to water pipe or copper tubeD indicates UL467 listed for direct burial in earth and concrete and are supplied with silicon bronze hardware1 in W pad50 in-lb installation torque for pipe and wire clampSilicon bronze hardware1-1/4 to 2 in water pipeMade of bronze alloy10 to 2 AWG stranded (main/primary) conductor size50 in-lb installation torque